Student cubesat demonstrates how to use a solar sail for satellite deorbit
Using cheap off-the-shelf parts students at Brown University have successfully tested a simple solar sail in space and shown how it can be used to de-orbit satellites efficiently and inexpensively.
They built a satellite on a shoestring budget and using off-the-shelf supplies available at most hardware stores. They even sent the satellite — which is powered by 48 Energizer AA batteries and a $20 microprocessor popular with robot hobbyists — into space about 10 months ago, hitching a ride on Elon Musk’s SpaceX rocket.
…The students added a 3D-printed drag sail made from Kapton polyimide film to the bread-loaf-sized cube satellite they built. Upon deployment at about 520 kilometers — well above the orbit of the International Space Station — the sail popped open like an umbrella and is helping to push the satellite back down to Earth sooner, according to initial data. In fact, the satellite is well below the other small devices that deployed with it. In early March, for instance, the satellite was at about 470 kilometers above the Earth while the other objects were still in orbit at about 500 kilometers or more.
Based on the data, it is expected the cubesat will burn up in the atmosphere in five years, not twenty-five or so predicted for the other cubesats launched to the same orbital elevation.
This experiment above all proves that most of the very expensive demo missions to test this kind of technology have been grossly over-budget. The entire cost of this student-built project was just $10,000, and it actually was more successful in proving this technology than a number of past solar sail projects that cost millions.
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Using cheap off-the-shelf parts students at Brown University have successfully tested a simple solar sail in space and shown how it can be used to de-orbit satellites efficiently and inexpensively.
They built a satellite on a shoestring budget and using off-the-shelf supplies available at most hardware stores. They even sent the satellite — which is powered by 48 Energizer AA batteries and a $20 microprocessor popular with robot hobbyists — into space about 10 months ago, hitching a ride on Elon Musk’s SpaceX rocket.
…The students added a 3D-printed drag sail made from Kapton polyimide film to the bread-loaf-sized cube satellite they built. Upon deployment at about 520 kilometers — well above the orbit of the International Space Station — the sail popped open like an umbrella and is helping to push the satellite back down to Earth sooner, according to initial data. In fact, the satellite is well below the other small devices that deployed with it. In early March, for instance, the satellite was at about 470 kilometers above the Earth while the other objects were still in orbit at about 500 kilometers or more.
Based on the data, it is expected the cubesat will burn up in the atmosphere in five years, not twenty-five or so predicted for the other cubesats launched to the same orbital elevation.
This experiment above all proves that most of the very expensive demo missions to test this kind of technology have been grossly over-budget. The entire cost of this student-built project was just $10,000, and it actually was more successful in proving this technology than a number of past solar sail projects that cost millions.
Readers!
Please consider supporting my work here at Behind the Black. Your support allows me the freedom and ability to analyze objectively the ongoing renaissance in space, as well as the cultural changes -- for good or ill -- that are happening across America. Fourteen years ago I wrote that SLS and Orion were a bad ideas, a waste of money, would be years behind schedule, and better replaced by commercial private enterprise. Only now does it appear that Washington might finally recognize this reality.
In 2020 when the world panicked over COVID I wrote that the panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Only in the past year have some of our so-called experts in the health field have begun to recognize these facts.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
The latest US Airforce academy experiment is exactly one of those over blown overly expencive experiments.
https://sputniknews.com/20230317/spacex-launch-saw-successful-delivery-of-unique-laser-energy-experiment-to-iss-1108488189.html
Basically they are firing a laser at a solar panel to see if energy can be transferred at long distances.
They have already proven it works on the ground.
No comments on the power loss doing things this way.
Note to those reading this, the link Bob provides (from Brown University) provides several pictures of the cube sat.
It is de-orbiting sooner, which is great.
But. What is the basis for the claim that it is due to solar wind as opposed to increased atmospheric drag because of a larger surface area?
The article specifically refers to it as a “drag sail” and makes no claim of solar pressure.